LM324DR2 - 4-Op-Amp 32V 1MHz SOIC-14 | onsemi
MPN: LM324DR2 ✓ NakahandaLM324DR2 Ulas
An operational amplifier is an analog signal-conditioning semiconductor that compares two input voltages and amplifies the difference between them. The LM324 belongs to the quad operational-amplifier family within the broader voltage-amplifier and analog IC hierarchy. Its four amplifiers can perform amplification, buffering, voltage comparison, summation, subtraction, filtering, and transducer-interface functions while sharing one supply package.
The LM324 series provides distinct advantages for single-supply systems. True differential inputs allow the amplifiers to operate around ground without requiring a dual supply in many common circuit arrangements. The input common-mode range includes ground, while the output stage can swing close to the negative supply under suitable load conditions. These characteristics make the device useful for battery-powered instrumentation, control loops, sensor interfaces, audio paths, and general industrial signal conditioning.
Each amplifier is implemented with true differential input behavior rather than a simple differential-input architecture. The operating bandwidth is approximately 1 MHz, with a typical slew rate of 0.6 V/µs. The offset voltage specification reaches up to 9 mV, while the input bias current is typically 45 nA. The integrated design eliminates the need for four separate single-amplifier packages when a circuit requires several matched functional blocks.
Typical uses include low-side current sensing, transducer buffering, active filtering, level shifting, comparator-style threshold circuits, and general instrumentation. The LM324DR2 is particularly suitable for cost-sensitive designs that need four amplifiers but do not require rail-to-rail input operation or the lower offset and bias current of precision amplifier families.
Designers should verify input and output common-mode limits at the selected supply voltage and load. Because the output cannot normally reach the positive supply rail, headroom must be preserved when using the device as a buffer. Stable operation also depends on correct feedback compensation, suitable bypass capacitance, source impedance, and load drive.
This product record combines the verified LM324DR2 identity and 14-SOIC configuration with practical guidance covering single-supply design, common-mode behavior, application selection, PCB implementation, and honest trade-offs among same-footprint quad-amplifier alternatives.
Mga alternatibo na pwedeng ilagay na LM324DR2 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok LM324DR2 (parehas na form factor at footprint) — pagkakaiba sa Package, Slew Rate, Amplifier Type, Input Offset Voltage, Number of Channels.
LM324DR2G
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324ADR2G
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM358DT
✅ Drop-In✗ Wala sa Stock
$0.0509 / Yunit
Tingnan ang Datasheet →LM2904DR
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →TL074CDR
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →LM324DR2 Mga Pinakamataas na Rating at Electrical Characteristics
| Amplifier Count | 4 amplifiers |
| Operating Supply Range | 3 V to 32 V |
| Maximum Total Supply Voltage | 32 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/µs |
| Input Offset Voltage | 9 mV maximum |
| Input Bias Current | 45 nA typical |
| Differential Input Type | True differential input |
| Packhaging | 14-pin SOIC |
| Total Pin Count | 14 pins |
| Uri ng Pagpapasok | Surface mount |
| Product Classification | Standard general-purpose amplifier |
| Operating Supply Mode | Single supply |
Gabay sa Pin Configuration ng LM324DR2 14-pin soic
Pin configuration para sa LM324DR2 (14-pin soic package). Ang analog component na ito ay may input, output, at power supply pins. Sumangguni sa datasheet ng manufacturer para sa offset null, compensation, at enable pin configurations. Perpekto para sa signal conditioning at amplifier circuits.
Wala ng detalyadong pinout data na magagamit para sa LM324DR2.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
LM324DR2 ay nararapat para sa 6 aplikasyons: Single-Supply Sensor Signal Conditioning, Low-Side Current Sensing, Active Low-Pass Filtering, Industrial Control and Threshold Detection, Audio and Communication Buffering, Instrumentation and Data Acquisition.
Single-Supply Sensor Signal Conditioning
The LM324DR2 fits low-frequency sensor interfaces because each amplifier has true differential inputs and the IC operates from 3 V to 32 V without requiring a negative supply in common configurations. A differential stage can amplify the difference between a sensor output and its reference, while another channel can buffer the result. Its 1 MHz gain-bandwidth product supports signals well below that bandwidth, although the 9 mV maximum input offset can become significant with millivolt-level sensor outputs. Confirm the input common-mode range and output headroom before using all four channels.
Inirekomenda
Low-Side Current Sensing
The LM324DR2 can measure the voltage generated by a low-side current shunt because its true differential inputs reduce dependence on the shunt's absolute ground-referenced voltage. The 1 MHz gain-bandwidth product is suitable for many power-conversion control loops, and the 45 nA typical input bias current limits loading of relatively high-impedance shunt paths. Designers should compare the 9 mV maximum offset against the expected shunt voltage and ensure the shunt common-mode voltage remains within the amplifier's allowed input range under worst-case load current.
Inirekomenda
Active Low-Pass Filtering
Each LM324DR2 amplifier can implement a first-order active low-pass or other RC-based filter stage, allowing four channels to share one package. The 1 MHz gain-bandwidth product provides ample open-loop bandwidth for many audio, control, and instrumentation filters whose cutoff frequencies are much lower, while the 0.6 V/µs slew rate helps preserve large-signal behavior. Keep the feedback network stable and observe the common-mode and output-swing limits, especially when filtering signals close to the supply rail.
Inirekomenda
Industrial Control and Threshold Detection
The LM324DR2 is suitable for threshold detection and basic control loops because it combines four amplifiers, single-supply operation, and approximately 1 MHz bandwidth in one 14-SOIC package. Different channels can perform signal comparison, error amplification, actuator drive, or buffering around an industrial controller. The device's maximum output swing will not reach the positive supply rail, so the interface must leave enough headroom for the logic or transistor stage being driven.
Inirekomenda
Audio and Communication Buffering
The LM324DR2 can buffer or amplify low-bandwidth audio and communications signals where cost and channel density matter more than rail-to-rail input capability. Its 0.6 V/µs slew rate and 1 MHz gain-bandwidth product support general-purpose small-signal paths, while four amplifiers allow buffering, mixing, and gain stages to share a package. Designers should account for the 9 mV maximum offset, verify the common-mode range for bipolar or offset audio signals, and avoid using the part where input swing reaches the positive rail.
Inirekomenda
Instrumentation and Data Acquisition
The LM324DR2 can provide frontend amplification, channel isolation, and gain stages in basic data-acquisition systems. Differential input capability helps reject common-mode voltage in instrumentation systems, while the four-amplifier count can reduce the number of packages needed for several channels. Its 1 MHz bandwidth supports many slow sensor-acquisition systems, but accuracy-critical measurement paths should evaluate the 9 mV offset, 45 nA typical bias current, input noise, and common-mode limits against the required error budget.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for LM324DR2 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | LM324DR2G | LM324ADR2G | LM358 | LM2904 | TL074 |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Brand | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Count | 4 amplifiers | 4 amplifiers | 4 amplifiers | 2 amplifiers | 4 amplifiers | 4 amplifiers |
Pangunahing mga Pagkakaiba
- Four independent amplifiers in one 14-SOIC package (kumpara saLM358)
- Single-supply general-purpose signal conditioning (kumpara saTL074)
- Exact onsemi family footprint retention (kumpara saLM324ADR2G)
Talaan ng Disenyo
Do not assume the LM324DR2 can swing its output all the way to the positive supply. Reserve output headroom for the connected logic, relay driver, or transistor stage. Also verify the input common-mode range at the lowest operating voltage. A circuit that accepts signals near the positive rail may require an amplifier with rail-to-rail inputs rather than the LM324DR2.
Place supply bypass capacitors close to the IC's power and ground pins, and keep the feedback and compensation components close to their associated amplifier pins. Route the differential input pair with similar geometry and minimize surrounding noise sources because 9 mV maximum offset and the practical input noise can set the achievable accuracy. Use a solid ground reference rather than a fragmented control-signal ground.
Use the 1 MHz gain-bandwidth product and 0.6 V/µs slew rate as design limits rather than guarantees of usable closed-loop bandwidth. Select feedback values that preserve stability at the selected gain, check capacitive loading on the output, and evaluate whether the input source impedance introduces phase error. For signals near the gain-bandwidth limit, verify the complete circuit response rather than relying on the nominal amplifier bandwidth.
Estimated: power dissipation is approximately P = (VIN - VOUT) × ILOAD for a linear amplifier operating from one supply. At a 12 V input, 5 V output, and 10 mA load, the estimated dissipation is 70 mW using those input values. The SOIC-14 thermal behavior still depends on copper area, airflow, ambient temperature, and the exact manufacturer thermal-resistance conditions.
Impormasyon ng Pagsunod sa Kautusan
No explicit compliance statement appears in the verified LM324DR2 product records. The suffix-specific manufacturer ordering information must be checked before making a compliance claim.